Opera continues to work on improving its alternate browsers, most recently releasing an update to Opera Mobile for Android containing an assortment of bugfixes and security improvements.

Opera Mobile 11.1 update 2 tightens-ups the security of the browser’s cache files. Apparently, it had previously been setting reduced permissions that would have let other apps read and modify the cache, creating an avenue for a potential exploit.

If things just weren’t looking right when you tried Opera Mobile in the past, you might want to check out some of the display-related fixes in this release. There are specific changes related to resolving blacked-out screens on start-up, making sure colors display correctly, and a host of font-display fixes. Some of the font fixes are specific to Samsung Galaxy smartphones, while others improve rendering for all models.

While we may have our eye on Opera Mobile as a smartphone browser, if you’re rocking a tablet, check for the new Honeycomb large-screen mode compatibility mode.